959555559591 has 48 divisors (see below), whose sum is σ = 1499423459040. Its totient is φ = 589255015680.

The previous prime is 959555559583. The next prime is 959555559593. The reversal of 959555559591 is 195955555959.

It is not a de Polignac number, because 959555559591 - 2³ = 959555559583 is a prime.

It is a super-3 number, since 3×959555559591³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959555559593) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9395421 + ... + 9497001.

It is an arithmetic number, because the mean of its divisors is an integer number (31237988730).

Almost surely, 2^959555559591 is an apocalyptic number.

959555559591 is a deficient number, since it is larger than the sum of its proper divisors (539867899449).

959555559591 is a wasteful number, since it uses less digits than its factorization.

959555559591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103136 (or 103133 counting only the distinct ones).

The product of its digits is 512578125, while the sum is 72.

The spelling of 959555559591 in words is "nine hundred fifty-nine billion, five hundred fifty-five million, five hundred fifty-nine thousand, five hundred ninety-one".